Dadaab Refugee Camp, KENYA - As with most natural disasters, numbers swirl around the drought on the Horn of Africa like so many dust particles.
They float up from the tyres of aid agency Land Cruisers in great billowing clouds; they blow in from donor conferences like a sandstorm sweeping in from the east; they get in your eyes, and cloud the air making it almost impossible to see through the statistics and understand what is really going on.
Wajir, Kenya - The people out here are tough, and so are their animals. But there is a limit to how much any human can take, and people like Alfon Abdulahi Mohamed have reached it.
We met Alfon as we drove towards what the aid agencies have called the "ground zero" of East Africa's devastating drought-hit areas.